如何使用Spring RestTemplate发送XML POST请求？

是否可以使用spring发送XML POST请求，例如RestTemplate ？

我想将以下xml发送到url localhost:8080/xml/availability

  123  

我还想动态地在每个请求上添加自定义http标头（！）。

我怎么能用弹簧实现这个目标？

Answer 1

首先，定义您的HTTP标头，如下所示：

 HttpHeaders headers = new HttpHeaders(); headers.add("header_name", "header_value"); 

您可以使用此方法设置任何HTTP标头。 对于众所周知的标头，您可以使用预定义的方法。 例如，要设置Content-Type标头：

 headers.setContentType(MediaType.APPLICATION_XML); 

然后定义HttpEntity或RequestEntity来准备您的请求对象：

 HttpEntity request = new HttpEntity(body, headers); 

如果您以某种方式访问XML字符串，则可以使用HttpEntity 。 否则，您可以定义与该XML对应的POJO。 最后使用postFor...方法发送请求：

 ResponseEntity response = restTemplate.postForEntity("http://localhost:8080/xml/availability", request, String.class); 

在这里，我将请求发送到http://localhost:8080/xml/availability端点，并将HTTP响应主体转换为String 。

注意，在上面的例子中， new HttpEntity(...)可以使用JDK7及更高版本替换为 new HttpEntity<>(...) 。

Answer 2

下面是一个完整的示例，说明如何使用RestTemplate交换XML文档并接收HTML响应：

 import static org.hamcrest.Matchers.is; import static org.junit.Assert.assertThat; import static org.springframework.test.web.client.match.MockRestRequestMatchers.header; import static org.springframework.test.web.client.match.MockRestRequestMatchers.content; import static org.springframework.test.web.client.match.MockRestRequestMatchers.method; import static org.springframework.test.web.client.match.MockRestRequestMatchers.requestTo; import static org.springframework.test.web.client.response.MockRestResponseCreators.withSuccess; import org.junit.Test; import org.springframework.http.HttpEntity; import org.springframework.http.HttpHeaders; import org.springframework.http.HttpMethod; import org.springframework.http.MediaType; import org.springframework.http.ResponseEntity; import org.springframework.test.web.client.MockRestServiceServer; import org.springframework.web.client.RestTemplate; import org.w3c.dom.Document; import org.xml.sax.InputSource; import java.io.StringReader; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; public class XmlTest { @Test public void test() throws Exception { RestTemplate restTemplate = new RestTemplate(); MockRestServiceServer mockServer = MockRestServiceServer.createServer(restTemplate); String htmlString = "
response
"; String xmlString = "123"; DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); Document document = builder.parse(new InputSource(new StringReader(xmlString))); mockServer.expect(requestTo("http://localhost:8080/xml/availability")) .andExpect(method(HttpMethod.POST)) .andExpect(content().string(is(xmlString))) .andExpect(header("header", "value")) .andRespond(withSuccess("
response
", MediaType.TEXT_HTML)); HttpHeaders headers = new HttpHeaders(); headers.add("header", "value"); HttpEntity request = new HttpEntity<>(document, headers); final ResponseEntity response = restTemplate.postForEntity("http://localhost:8080/xml/availability", request, String.class); assertThat(response.getBody(), is(htmlString)); mockServer.verify(); } } 

Answer 3

以下查找例如使用RestTemplate将XML作为String交换并接收响应：

 String xmlString = "123"; RestTemplate restTemplate = new RestTemplate(); //Create a list for the message converters List> messageConverters = new ArrayList>(); //Add the String Message converter messageConverters.add(new StringHttpMessageConverter()); //Add the message converters to the restTemplate restTemplate.setMessageConverters(messageConverters); HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_XML); HttpEntity request = new HttpEntity(xmlString, headers); final ResponseEntity response = restTemplate.postForEntity("http://localhost:8080/xml/availability", request, String.class);